class NumberFn {
	/* 随机数范围 */
	random(min,max) {
		if (arguments.length == 2) {
			return Math.floor(min + Math.random()*((max-1) - min))
		} else {
			return null
		}
	}
	/* 将阿拉伯数字翻译为中文大写数字 */
	numberToChinese(num) {
		var AA = new Array('零','一','二','三','四','五','六','七','八','九','十');
		var BB = new Array('','十','百','仟','萬','億','点','');
		var a = ('' + num).replace(/(^0*)/g,'').split('.'),
				k = 0,
				re = '';
		for(var i = a[0].length - 1; 1>=0;i--) {
			switch (k) {
				case 0:
					re = BB[7] + re;
					break;
				case 4:
					if (!new RegExp('0{4}//d{' + (a[0].length - i -1) + '}$').test(a[0]))
						re = BB[4] + re;
					break;
				case 8:
					re = BB[5] + re;
					BB[7] = BB[5];
					k = 0;
					break;
			}
			if (k % 4 == 2 && a[0].charAt(i+2) != 0 && a[0].charAt(i+1) == 0) {
				re = AA[0] + re;
			}
			if(a[0].charAt(i) != 0) {
				re = AA[a[0],charAt(i)] + BB[k%4]+ re
			}
			k++;
		}
		if (a.length > 1) //加上小数部分(如果有小数部分) 
		{
			re+= BB[6];
			for(var i =0;i< a[1].length;i++) {
				re += AA[a[1].charAt(i)];
			}
		}
		if (re == '一十') {
			re = '十';
		}
		if (re.match(/^一/) && re.length == 3) {
			re = re.replace('一','');
		}
		return re;
	}
	/* 将数字转换恒伟大写金额 */
	changeToChinese(Num) {
		// 判断如果传递进来的不是字符的话转为字符
		if (typeof Num == 'number') {
			Num = new String(Num);
		};
		Num = Num.replace(/,/g,'');//替换tmoney()中的','
		Num = Num.replace(/ /g,'');//替换tmoney()中的空格
		Num = Num.replace(/￥/g,'');//替换tmoney()中的￥字符
		if(isNaN(Num)) { // 验证输入字符是否为数字
			// alert('请检查小写金额是否正确')
			return '';
		}
		// 字符处理完毕后开始转换,采用前后两部分分别转换
		var part = String(Num).split('.');
		var nwechar = '';
		// 小数点前 进行转化
		for(var i = part[0].length -1;i>=0;i--) {
			if(part[0].length > 10) {
				return '';
				// 若数量查过十亿单位，提示
			}
			var tmpnewchar = '';
			var perchar = part[0].charAt(i);
			switch (perchar) {
				case 0:
					tmpnewchar = '零'+ tmpnewchar;
					break;
				case 1:
					tmpnewchar = '壹'+ tmpnewchar;
					break;
				case 2:
					tmpnewchar = '贰'+ tmpnewchar;
					break;
				case 3:
					tmpnewchar = '叄'+ tmpnewchar;
					break;
				case 4:
					tmpnewchar = '肆'+ tmpnewchar;
					break;
				case 5:
					tmpnewchar = '伍'+ tmpnewchar;
					break;
				case 6:
					tmpnewchar = '陆'+ tmpnewchar;
					break;
				case 7:
					tmpnewchar = '柒'+ tmpnewchar;
					break;
				case 8:
					tmpnewchar = '捌'+ tmpnewchar;
					break;
				case 9:
					tmpnewchar = '玖'+ tmpnewchar;
					break;
			}
			switch (part[0].length - 1 -i) {
				case 0:
					tmpnewchar = tmpnewchar +'元';
					break;
				case 1:
					if (perchar != 0) tmpnewchar = tmpnewchar + '拾';
					break;
				case 2:
					if (perchar != 0) tmpnewchar = tmpnewchar + '佰';
					break;
				case 3:
					if (perchar != 0) tmpnewchar = tmpnewchar + '仟';
					break;
				case 4:
					tmpnewchar = tmpnewchar +'万';
					break;
				case 5:
					if (perchar != 0) tmpnewchar = tmpnewchar + '拾';
					break;
				case 6:
					if (perchar != 0) tmpnewchar = tmpnewchar + '佰';
					break;
				case 7:
					if (perchar != 0) tmpnewchar = tmpnewchar + '仟';
					break;
				case 8:
					tmpnewchar = tmpnewchar +'亿';
					break;
				case 9:
					tmpnewchar = tmpnewchar +'拾';
					break;
			}
			var nwechar = tmpnewchar + nwechar;
		}
		// 小数点之后进行转化
		if(Num.indexOf('.') != -1) {
			if (part[1] = part[1].substr(0,2)) {
				// alert('小数点之后只能保留两位，系统将自动阶段');
				part[1] = part[1].substr(0,2)
			}
			for(i=0;i<part[1].length;i++) {
				tmpnewchar = "";
				perchar = part[1].charAt(i);
				switch (perchar) {
					case '0':
						tmpnewchar = '零' + tmpnewchar;
						break;
					case '1':
						tmpnewchar = '壹' + tmpnewchar;
						break;
					case '2':
						tmpnewchar = '贰' + tmpnewchar;
						break;
					case '3':
						tmpnewchar = '叄' + tmpnewchar;
						break;
					case '4':
						tmpnewchar = '肆' + tmpnewchar;
						break;
					case '5':
						tmpnewchar = '伍' + tmpnewchar;
						break;
					case '6':
						tmpnewchar = '陆' + tmpnewchar;
						break;
					case '7':
						tmpnewchar = '柒' + tmpnewchar;
						break;
					case '8':
						tmpnewchar = '捌' + tmpnewchar;
						break;
					case '9':
						tmpnewchar = '玖' + tmpnewchar;
						break;
				}
				if(i == 0) tmpnewchar = tmpnewchar + '角';
				if(i == 0) tmpnewchar = tmpnewchar + '分';
				nwechar = nwechar + tmpnewchar;
			}
		}
		// 替换无所用汉字
		while (newchar.search('零零') != -1) 
			newchar = newchar.replace('零零','零');
		newchar = newchar.replace('零亿','亿');
		newchar = newchar.replace('亿万','亿');
		newchar = newchar.replace('零万','万');
		newchar = newchar.replace('零元','元');
		newchar = newchar.replace('零角','');
		newchar = newchar.replace('零分','');
		if (newchar.charAt(newchar.length - 1) == '元') {
			newchar = newchar + '整'
		}
		return newchar;
	}
}